lockstat: fixup signed division

Some recent modification to this code made me notice the little todo mark.
Now that we have more elaborate 64-bit division functions this isn't hard.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 3 deletions

diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index 20dbcbf9c7dd..8d3a6eba8d5a 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -470,11 +470,12 @@ static void seq_line(struct seq_file *m, char c, int offset, int length)
 
 static void snprint_time(char *buf, size_t bufsiz, s64 nr)
 {
-        unsigned long rem;
+        s64 div;
+        s32 rem;
 
         nr += 5; /* for display rounding */
-        rem = do_div(nr, 1000); /* XXX: do_div_signed */
-        snprintf(buf, bufsiz, "%lld.%02d", (long long)nr, (int)rem/10);
+        div = div_s64_rem(nr, 1000, &rem);
+        snprintf(buf, bufsiz, "%lld.%02d", (long long)div, (int)rem/10);
 }
 
 static void seq_time(struct seq_file *m, s64 time)